Warning: require_once(C:\xampp\htdocs\includes/../vendor/autoload.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\includes\connection.inc.php on line 3

Fatal error: Uncaught Error: Failed opening required 'C:\xampp\htdocs\includes/../vendor/autoload.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\includes\connection.inc.php:3 Stack trace: #0 C:\xampp\htdocs\PHP\all-upper-container.php(2): include() #1 C:\xampp\htdocs\index.php(1): include('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\includes\connection.inc.php on line 3